Forums

FIR filter canonic structure

Started by faz May 25, 2008
On May 26, 3:29 am, faz <fazulu.v...@gmail.com> wrote:
> On May 26, 12:18 pm, "bharat pathak" <bha...@arithos.com> wrote: > > > > > >Hai, > > > >My filter structure is direct form...not direct form transpose > > >structure...I am looking for a tool which can generate coefficients .. > > > >regards, > > >faz > > > Matlab or octave will generate filter coefficients. use the firpmord > > and firpm function in matlab. this will generate coefficients which > > u can use for either "direct form" or "transpose form". > > > In case if u cannot still do it, send us a mail at bharat at arithos dot > > com and we can help u with the code for a small amount. > > > Regards > > Bharat Pathak > > > Arithos Designswww.Arithos.com > > > DSP Design Consultancy and Training company. > > Hai, > > any idea of other inexpensive automatic fir design tools which can > generate filter coefficients for non-symmetric direct form low pass > FIR filter??? > > regards, > faz
Why non-symmetric? Are you looking for a minimum phase filter? Or a FIR version of an IIR filter?
On May 27, 2:02&#2013266080;am, tony kirke <tki...@gmail.com> wrote:
> On May 26, 3:29 am, faz <fazulu.v...@gmail.com> wrote: > > > > > On May 26, 12:18 pm, "bharat pathak" <bha...@arithos.com> wrote: > > > > >Hai, > > > > >My filter structure is direct form...not direct form transpose > > > >structure...I am looking for a tool which can generate coefficients .. > > > > >regards, > > > >faz > > > > Matlab or octave will generate filter coefficients. use the firpmord > > > and firpm function in matlab. this will generate coefficients which > > > u can use for either "direct form" or "transpose form". > > > > In case if u cannot still do it, send us a mail at bharat at arithos dot > > > com and we can help u with the code for a small amount. > > > > Regards > > > Bharat Pathak > > > > Arithos Designswww.Arithos.com > > > > DSP Design Consultancy and Training company. > > > Hai, > > > any idea of other inexpensive automatic fir design &#2013266080;tools which can > > generate filter coefficients for non-symmetric direct form low pass > > FIR filter??? > > > regards, > > faz > > Why non-symmetric? Are you looking for a minimum phase filter? Or a > FIR version of an IIR filter?
hai, I am not looking for a optimized implementation of FIR filter like symmetric (even or odd) which result in linear phase(which halves the number of multiplier at the cost of more adders).But i am looking for non-symmetric FIR filter which has M-multipliers and M-1 adders. pls suggest coefficients generation for this.. regards, faz
faz wrote:
> Hai all, > > I am searching for a tool other than FDA matlab to give me FIR low > pass filter coefficients for canonic structure with any one method > like window,remez algo etc...I already tried scopeFIR,WinDFplus,FIR > tool..pls suggest the dsp tool where i can get the filter > coefficients??pls specify links if any..
What's your problem getting the coefficients with those tools? Google will show you others. Jerry -- Engineering is the art of making what you want from things you can get. &#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;&#2013266095;